Results of the simultaneous measurements of changes in the conductivity of 3 quantum point contacts (QPC) made in GaAs-AlGaAs heterostructure due to impacts of alpha-particles at liquid helium temperatures are presented. Calculation of the position of penetration is based on the Thomas-Fermi approximation for screening in 2DEG. This method is put forward as a new type of a charged particle detector with high lateral resolution.
|Journal||Physica B: Condensed Matter|
|Publication status||Published - 1994|
|Event||20th International Conference on Low Temperature Physics - Eugne, OR, United States|
Duration: 4 Aug 1993 → 11 Aug 1993
Conference number: 20
|Conference||20th International Conference on Low Temperature Physics|
|Period||04/08/1993 → 11/08/1993|